Leer.



H. S. EEICHERT & H. S. DRURY.

LEER.

APPLICATION FILED JAN.23, 1914.

Patented Jan.26,1915.

2 SHEBTSSHEET'1.'

INVENTORS #559 WITNESSES H. S. HEIGHBRT & H. S. DRURY LEER.

APPLICATION FILED .TAN.23, 1 914.

1.126.465. Patented Jan. 26, 1915.

2 SHEETS-SHEET 2.

INVENTORE) UNITED STATES FATE @FFICE.

HERMAN S. HEICHERT, OF PITTSBURGH, AND HARRY S. DRUR-Y. OF FORD CITY, PENN- SYLVANIA, ASSIGNORS TO PITTSBURGH PLATE GLASS COMPAFLY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

LEER.

Specification of Letters Patent.

Patented Jan. 26,1915.

To all whom it may concern:

Be it known that we, HERMAN S. HEI- ci-InRT, of Pittsburgh, Allegheny county, Pennsylvania, and HARRY S. DRURY, of Ford City, in the county of Armstrong and State of Pennsylvania, have invented certain new and useful Improvements in Leers, of which the following is a specification.

The invention relates to leers for use in annealing sheet glass, and particularly to the mechanism for securing the movement of the glass. The invention has for its primary object the prov'ision of improved means for securing an adjustment of the reciprocating bars to a common level. One embodiment of the invention is illustrated in the accompanying drawings, wherein- Figure 1 is a horizontal section through the leer operating bars with our improvement applied thereto, Fig. 2 is ahalf transverse section taken through the construction of Fig. 1, Fig. 3 is an enlarged sectional plan view taken at the center of the leer, Fig. 4 is an enlarged detail side elevation showing the means for supporting the reciprocatory bars. Fig. 5 is a plan view of one of the adjusting rods. Fig. 6 is a partial plan view of the supporting casting or bed plate, with the rollers and their supports removed therefrom, and Fig. '7 is an end elevation of one of the rollers and its supporting block.

As is common in leers. our preferred structure includes a series of bars extending longitudinally of the leer, which remain at substantially the same level and are reciprocated back and forth. and sets of bars whichv alternate with the other bars, and have a substantially vertical movement suificient to lift the glass oil' the reciprocating bars.

After the reciprocating bars have carried the glass forward the lifting bars lift itoff the reciprocating bars and the reciprocating bars move back to a new feed position. The lifting bars then lower the glass onto the reciprocating bars and a new forward movement occurs. The means for securing these two movements is well known in the art, and the con -truction forms no part of my present invention which relates to the construction for securing, a leveling up or alining of the rollers which carry the reciprocating bars. The construction is of course applicable to leer constructions other than the particular one above described, and it will be understoodthat the leer construction shown in the drawings and hereinafter described is merely illustrative of one embodiment of the broad invention.

' Referring to Figs. 1 and 2-; 1, 2, 3, and 4:

I are the sides, top, and bottom, respectively of the leer, which may be of any approved type. Mounted for an up and down movement in the leer are the lifting bars 5, such bars alternating with the reciprocating bars 6, which latter bars do not alter their vertical position. The lifting bars 5 are given their vertical movement by means of the levers 7 (Figs. 1 and 4) mounted upon transverse shafts 8. As indicated in Fig. 1 the levers 7 are made in pairs so as to straddle the bars 5, and at periodic intervals the rods 8 are rocked, thus rocking the levers 7 and lifting and lowering the bars The reciprocating bars 6 are T-shaped in cross section as indicated in Fig. 2, and the legs oLthe Ts slide between the flanges of the rollers 9 (Fig. 7). The rollers 9 are mounted for rotation in blocks 10 having vertical gu'ideways 11 in their sides and downwardly projecting-stems 12 on their lower sides. These blocks 10 are all mounted for vertical adjustment, in transversely extending bed plates 13 (Figs. 1 and 6). A bed plate extends from one side of the leer to the other and is provided with a series of upstanding flanges 14: (Fig. 6). Intermediate each pair of flanges 14 is a perforation 15. The guide recesses 11 in the sides of the bearing blocks 10 (Fig. 7) are spaced apart and so proportioned as to receive the flanges '14: on the bed plate, so that each bearing block is mounted for guided vertical movement. \Vhen in this position, the stem 12 on the bottom of the bearing block fits slidably through the perforation 15 in the bottom of the bed plate.

Upon the bottom face ofthe bed plate 13 are a plurality of oblique guideways 16 (Fig. 6). such guideways being formed by the downwardly projecting opposing ribs 17. such ribs merging into the plate 18 (Figs. 4: and (i). Fitting in the oblique guideways 16 are the adjusting wedges 19. one of which isshown in detail in Fig. 5, These wedges are provided with handles 20 which are of sufficient length to extend through the casting 21 (Fig. 1) carried by the side wall of'the leer. It will be seen half offlthe, blocks are-adjusted from one;

' the leer possible .to adjust each of the bearing blocks independently so that the-top.surfaces-:of all the reciprocating bars 6 may be brought into horizontal alinement, and in' case "of Warpir'ig :tendingto throw the bars out of 1.0

alinement, the height of the blocks may be easily readjusted "to bring the surfaces of 'the'barbackinto perfe'ct 'alinement.

Preferably, as indicated in Fig. 1', onesided the leer-and the other half from the other side, which arrangement is more compact and does not necessitate handles of excessiv ly" great length such as would be the-case if allof-the blocks were adjusted from oneside of the leer. At the center of a curved wedge 22 is preferably employed, guided between the ribs 23 and24, the wedge being pivoted to its handle as indicated at 25.

The advantages of .our construction will be readily apparent to those skilled inthe art. The: bearingblocksfare all securely guided againstlateral'movement, while free to be adjusted-vertically, and-thel-vertical adjustment is secured by a positivemeans not liable to-get out-of order, and of simple and cheap construction. The adjustment, occurring as it does fr'orn'the outside of the leer, can be made While the leer is in operation' and in no way interfering with such operatic The bearing blocksare very securely held in their positions of adjustments, and all of the parts can be" very readily assembled and disassembled.

What we claim is- 1. In combination in aleer havmg a series of reciprocatory bars extending longitudinally thereof, a series of supports for the said bars independently adjustable'verticirlly, and means operable from the out:

sideof the leer at the side thereof whereby the supports inav be separately adjusted vertically. I

2. In combination in a leer having a series of reciprocatory bars extending longitudinally thereofja series of supports independently adjustable vertically for the.

said'bars', wedges for separately adjusting ries of reciprocatorybars. extending longi 'tudinally thereof, a series .of supperts for the said bars independently adjilstable 'yer ticall'y provided with ,rol-lers' engaging: the

bars, and means'o'perable iromfthe outside of the 'le'eriwhereby, the" supports may be 7 sep a-rately, adj usted vertically;

@ 4.111 combination in a leer'having- -a'series ofgreciproeatory bar's" extending longitudinally' thereof,- a bed{.plate',.elztending.

transversely beneath thefbars; a seriesof.

supportsindependen tly movable vertically carried: bythe bed plate and provided with rollers "engaging the barsg'a; series of wedges for separately moving the" supports vertically, and. Perat-ingconnections for moving the wedges fsepa'rately, extendingtofthe exterior of-the leerL- p 5.: Incombination in a. leer having aseries of reciprocatory barslextendingflongitudina1ly-the'r'eof,' a series of independentlymov'able supports for thesaid bars, wedges beneath the 'supportsextending obliquely with respect to the barsi and handles extending through the wall of. the leer for operating; the wedges separately to adjust the vertical position of the supports.

6. In combination ina deer having. a series ofreciprocatory barsextending-longitudinally thereof; a bed plate extending transversely beneath the bars,- a series of supports independently movable vertically carried by the bedplate' and guided-vertically thereon and providedwithrollers engaging the bars, oblique guideways carried by the bed plate beneath the "supportsyan'd wedges fitting'the said'guideways'ifor sepa: rately moving the supports vertically and. provided with handles for operating the wedges from points remote therefrom;

In testimony whereof we have, hereunto signed our names in the presence of the two subscribed witnesses HERMAN s. HEIGHERTL HARRY. s. nnunr. 

